All coverage
Libyan crisis escalates as warplane strikes Tripoli airport
By Patrick Wintour
The backstory to Hifter's march on Tripoli
By Jason Pack
US pulls troops from Libya amid a surge in violence
By Eliza Mackintosh
Libya fighting prompts condemnation by G7 and UN
By sebastian usher
American troops in Libya moved out of country as violence escalates near capital
By Sudarsan Raghavan
Battle for Tripoli escalates as fighting nears Libyan capital
By Chris Stephen & Patrick Wintour